鋼素材および鋼管材の機械的性質に及ぼす寸法差の影響に関する研究

概要

論文の詳細を見る
To clarify the influence of the size difference on the mechanical properties of material specimens and tubular member in steel, tension tests in which the shape of cross section and gauge length were assumed to be variables were performed. The results are as follows. Neither yield point stress nor tensile strength were influenced by the size difference of material specimen or tubular member. The elongation was greatly influenced by the size difference. If very long member is excluded, the elongation can be evaluated using either Barba's law or Oliver's law. If the authors' proposed law is used, the elongation considering the size difference can be evaluated better than when using another law. The elongation decreases but strength increases somewhat when concrete is filled inside the pipe. The stress-strain relation of the tubular member can be predicted by using the stress-strain relation obtained by the coupon tests. The stress-strain relation of square tubular member is affected by the properties of the seam and the corners of the member.
久留米工業大学の論文
1998-12-20